WO2024016795A1 - Novel salt spray environment test system and method - Google Patents

Abstract

Disclosed in the present invention are a novel salt spray environment test system and a method. The system comprises a temperature controller, a humidity controller, a salt spray controller, and a salt spray mixing box; the temperature controller is connected to the salt spray mixing box by means of two pipelines; one pipeline is provided with a fan and the humidity controller; and the other pipeline is provided with a fan and is connected to the salt spray controller. Temperature- and humidity-adjusted air is input into the salt spray mixing box by means of the temperature controller, the fans, and the humidity controller; the salt spray controller inputs salt spray into the salt spray mixing box through the pipeline; and the air and salt spray are mixed in the salt spray mixing box and then the mixture is output to the outside of the system by means of an external fan. The system of the present invention has a simple and compact structure, is easy to automatically control, convenient to install, and suitable for environment test equipment needing salt spray atmosphere.

Description

A new salt spray environment test system and method Technical field

The invention relates to the technical field of salt spray testing, and in particular to a new type of salt spray environment testing system and method.

Background technique

The traditional salt spray test chamber forms salt spray by compressing air, but the salt spray particles produced by this method are larger, which is quite different from the salt spray environment characteristics in the actual environment; in addition, the environment during the traditional salt spray test is relatively High humidity and high salt spray concentration can easily cause the electrical connections of the complete electrical and electronic equipment to fail, making it impossible to carry out environmental tests under operating conditions for the complete electrical and electronic equipment. The limitations of the traditional salt spray test method make it unable to accurately simulate the characteristics of the actual environment, resulting in a large difference between the test results of the complete equipment and the actual behavior, and poor correlation.

Contents of the invention

The invention provides a new salt spray environment test system, which includes: a temperature controller 1, a humidity controller 2, a salt spray controller 3 and a salt spray mixing box 4; the temperature controller 1 is connected to the salt spray mixing box through two pipes 4. Set a fan and humidity controller 2 on one pipe, and set a fan and connect the salt spray controller 3 on the other pipe. The air after adjusting the temperature and humidity is input to the salt spray mixing box 4 through the temperature controller 1, fan and humidity controller 2. The salt spray controller 3 inputs salt spray into the salt spray mixing box 4 through the pipeline. The air and salt spray are mixed in the salt spray. After mixing in the mixing box 4, it is output to the outside of the system through an external fan.

A new type of salt spray environment test system as described above, in which an evaporator 11 and a heater 12 are provided in the temperature controller 1, and the air temperature is adjusted by adjusting the evaporator 11 and the heater 12; the temperature controller 1 passes through the first pipe 5 and the second pipe 6 output the conditioned air to the outside.

A new salt spray environment test system as described above, in which a first fan 7 and a humidity controller 2 are provided on the first pipe 5, and the first fan 7 adjusts the air flow output by the temperature controller 1, and the humidity controller 2 Mainly composed of a humidification system, the humidification amount is adjusted by the power of the humidification system in the humidity controller 2, thereby adjusting the relative humidity of the air in the first pipe 5, and the adjusted humidity air is input into the salt spray mixing box 4 through the first pipe 5 .

A new type of salt spray environment test system as described above, wherein the second pipe 6 is provided with a second Fan 8 and salt spray controller 3. The salt spray controller 3 includes a salt spray generator 31 and a salt spray output pipe 32. The salt spray output pipe 32 is connected to the second pipe 6. The salt spray generated by the salt spray generator 31 passes through The salt spray output pipe 32 delivers the second pipe 6 and enters the salt spray mixing box 4 through the second pipe 6 . Preferably, the pipe outlet of the first pipe 5 leading into the salt spray mixing box 4 is close to the second pipe 6 and is arranged at the bottom of the salt spray mixing box 4 so that the air in the first pipe 5 and the salt spray in the second pipe 6 can Integrate quickly.

A new type of salt spray environment test system as described above, in which the salt spray generator 31 includes an ultrasonic atomization piece 311, a liquid storage tank 312 and an atomization chamber 313. The atomization chamber 313 is provided with a water level sensor 314 to control the storage tank. The amount of solution in the liquid tank 312 entering the atomization chamber 313 ensures that the water level in the atomization chamber 313 is within an appropriate range and ensures the normal operation of the atomization sheet.

A new type of salt spray environment test system as described above, in which the salt spray output pipe 32 is a pipeline structure in which a vertical pipe 321, a curved pipe 322 and a transverse pipe 323 are integrally formed; the vertical pipe 321 is connected to the salt spray generator 31 Atomization chamber 313; the curved tube 322 can make the larger droplets generated by the salt spray generator 31 flow back to the atomization chamber 313, ensuring that what passes into the second pipe 6 is a uniform salt spray atmosphere with a particle size of microns; The direction of the pipe outlet of the transverse pipe 323 is toward the salt spray mixing box 4, so that the generated salt spray can directly pass into the salt spray mixing box 4 with less resistance.

A new type of salt spray environment test system as described above, in which, in the salt spray mixing box 4, the air introduced through the first pipe 5 and the salt spray introduced through the second pipe 6 are mixed, and the mixed gas The third pipe 9 and the third fan 10 connected through the outer top of the salt spray mixing box 4 are output to the outside of the system.

A new type of salt spray environment test system as described above, in which the first fan 7, the second fan 8 and the third fan 10 are air supply devices of the same structure type, and can be equipped with automatic switches and flow adjustment components. To achieve automatic control of the switch and flow, the wind speed of the fan can be adjusted to meet different flow requirements, and the flow rate of the third fan 10 needs to be set equal to the sum of the flow rates of the first fan 7 and the second fan 8 to avoid internal pressure in the system. Variety.

The invention also provides a new salt spray environment test method, which includes:

Set the required parameters of the salt spray mixing box, add salt solution to the liquid storage tank of the salt spray controller, change the voltage of the ultrasonic atomizing piece, and control the atomization amount of the ultrasonic atomizing piece. According to the set salt spray mixing box Parameters, determine the temperature controller and humidity controller parameters;

When the system is running, the temperature of the air is adjusted to corresponding parameters through the temperature controller, and the air in the temperature controller is transported to the first pipe and the second pipe through the first fan and the second fan respectively;

The air in the first pipe controls the relative humidity of the air through the humidity controller, and then flows into the salt spray mixing box; the air in the second pipe takes away the salt spray atmosphere generated by the salt spray generator and flows into the mixing box;

Set the flow rate of the third fan, pass the salt spray in the salt spray mixing box into the plexiglass box, monitor the relative humidity and salt spray concentration in the plexiglass box, and adjust the power of the humidity controller and the occurrence of salt spray based on feedback from the monitoring results. The power of the generator is increased until the salt spray concentration and relative humidity in the organic glass box reach the set values.

The beneficial effects achieved by the present invention are as follows:

1. The present invention solves the limitations of excessive salt spray droplets caused by traditional salt spray generation methods, and the inability to coordinately control salt spray concentration and relative humidity. By adopting a modular design and setting up a salt spray generation module, a temperature and humidity control module, etc., The realization of fine and uniform salt spray particles, controllable adjustment of salt spray concentration and relative humidity makes the test environment closer to the actual environment and improves the correlation of test results.

2. The system of the present invention has a simple and compact structure, is easy to automatically control, and is easy to install. It is suitable for environmental testing equipment that requires a salt spray atmosphere.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

Figure 1 is a schematic diagram of a new salt spray environment test system provided by Embodiment 1 of the present invention;

Figure 2 is a schematic diagram of a salt spray generator;

Figure 3 is a flow chart of a new salt spray environment test method provided in Embodiment 2 of the present invention.

Explanation of reference symbols:

1-Temperature controller, 11-Evaporator, 12-Heater; 2-Humidity controller; 3-Salt spray controller, 31-Salt spray generator, 311-Ultrasonic atomizer sheet, 312-Liquid storage tank, 313 -Atomization chamber, 314-water level sensor, 32-salt spray output pipe, 321-vertical pipe, 322-bent pipe, 323-transverse pipe; 4-salt spray mixing box, 41-salt spray laser monitoring sensor, 42- Temperature and humidity sensor; 5-first pipe; 6-second pipe; 7-first fan; 8-second fan; 9-third pipe; 10-third fan.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention.

Embodiment 1

Referring to Figure 1, Embodiment 1 of the present invention provides a new type of salt spray environment test system, including: a temperature controller 1, a humidity controller 2, a salt spray controller 3 and a salt spray mixing box 4. The temperature controller 1 is connected to the salt spray mixing box 4 through two pipelines. A fan and a humidity controller 2 are installed on one pipeline, and a fan and a salt spray controller 3 are installed on the other pipeline. The air after adjusting the temperature and humidity is input to the salt spray mixing box 4 through the temperature controller 1, fan and humidity controller 2. The salt spray controller 3 inputs salt spray into the salt spray mixing box 4 through the pipeline. The air and salt spray are mixed in the salt spray. After mixing in the mixing box 4, it is output to the outside of the system through an external fan.

An evaporator 11 and a heater 12 are provided in the temperature controller 1, and the air temperature is adjusted by adjusting the evaporator 11 and the heater 12. Specifically, the evaporator 11 and the heater 12 control the alternate operation of the evaporator 11 and the heater 12 according to the ambient temperature and the temperature required by the test, so as to adjust the air temperature. The temperature controller 1 outputs the conditioned air to the outside through the first pipe 5 and the second pipe 6 .

Among them, a first fan 7 and a humidity controller 2 are provided on the first pipe 5. The first fan 7 adjusts the air flow output by the temperature controller 1. The humidity controller 2 is mainly composed of a humidification system. Humidification is carried out through the humidity controller 2. The power of the system adjusts the humidification amount, thereby adjusting the relative humidity of the air in the first pipe 5 , and the humidity-adjusted air is input into the salt spray mixing box 4 through the first pipe 5 .

The second pipe 6 is provided with a second fan 8 and a salt spray controller 3. The salt spray controller 3 includes a salt spray generator 31 and a salt spray output pipe 32. The salt spray output pipe 32 is connected to the second pipe 6. The salt mist generated by the mist generator 31 is transported to the second pipe 6 through the salt mist output pipe 32 and enters the salt mist mixing box 4 through the second pipe 6 . Preferably, the pipe outlet of the first pipe 5 leading into the salt spray mixing box 4 is close to the second pipe 6 and is arranged at the bottom of the salt spray mixing box 4 so that the air in the first pipe 5 and the salt spray in the second pipe 6 can Integrate quickly.

Specifically, as shown in Figure 2, the salt spray generator 31 includes an ultrasonic atomization sheet 311, a liquid storage tank 312 and an atomization chamber 313. The atomization cavity 313 is provided with a water level sensor 314 to control the entry of the solution in the liquid storage tank 312. The amount in the atomization chamber 313 ensures that the water level in the atomization chamber 313 is within an appropriate range and ensures the normal operation of the atomizer sheet. The solution in the atomization chamber 313 is changed into a micron-level fine mist through the high-frequency vibration of the ultrasonic atomization piece 311, and is passed into the salt spray output pipe 32. The high-frequency vibration frequency of the ultrasonic atomizing piece 311 in the salt spray generator 31 can be selected as 1.7MHz, 2.4MHz, or 3MHz, and is controlled by adjusting the voltage of the ultrasonic atomizing piece 311 Atomization power, thereby adjusting the atomization amount of the solution.

The salt spray output pipe 32 is a pipe structure in which a vertical pipe 321, a curved pipe 322 and a transverse pipe 323 are integrally formed. The vertical tube 321 is connected to the atomization chamber 313 of the salt spray generator 31; the curved tube 322 can make the larger droplets generated by the salt spray generator 31 flow back to the atomization chamber 313, ensuring that the particles entering the second pipe 6 are The diameter of the salt spray atmosphere is micron level and uniform; the outlet direction of the transverse tube 323 is toward the salt spray mixing box 4, so that the generated salt spray can directly pass into the salt spray mixing box 4 with less resistance.

In the salt spray mixing box 4, the air introduced through the first pipe 5 and the salt spray introduced through the second pipe 6 are mixed, and the mixed gas passes through the third pipe 9 connected to the outer top of the salt spray mixing box 4 and The third fan 10 is outside the output system to ensure the salt spray atmosphere and even mixing before transporting the salt spray with required concentration, temperature and humidity to the outside. Specifically, the salt spray concentration is adjusted by adjusting the atomization amount of the salt spray generator 31 and the flow rate of the second fan 8, and the relative humidity of the final salt spray is controlled by adjusting the relative humidity and flow rate of the air in the first pipe 5.

In the embodiment of the present application, the first fan 7, the second fan 8 and the third fan 10 are air supply devices of the same structure type, and can be equipped with automatic switches and flow adjustment components to realize automatic control of switches and flow. The wind speed can be adjusted to meet different flow requirements, and the flow rate of the third fan 10 needs to be set equal to the sum of the flow rates of the first fan 7 and the second fan 8 to avoid changes in the internal pressure of the system.

Embodiment 2

As shown in Figure 3, Embodiment 2 of the present invention provides a new salt spray environment test method, which is applied to a system composed of the salt spray environment test system of Embodiment 1 and a program controller. The program controller performs the salt spray environment test. The data calculation is carried out by the salt spray environment test system for the actual operation of the salt spray test.

The new salt spray environment test method specifically includes the following steps:

Step 310: Set the required parameters of the salt spray mixing box, add salt solution to the liquid storage tank of the salt spray controller, change the voltage of the ultrasonic atomization piece, and control the atomization amount of the ultrasonic atomization piece. According to the set salt Fog mixing box parameters, determine temperature controller and humidity controller parameters;

In the embodiment of this application, the temperature controller and humidity controller parameters are determined according to the set parameters of the salt spray mixing box, which specifically includes the following sub-steps:

Step 311: Pre-train the salt spray loss model in the program controller;

Considering that the salt spray environment test system will have a certain salt spray loss during the salt spray test, and this salt spray loss will be different in each salt spray test, this application first obtains historical salt spray test data, including Temperature controller temperature and power, humidity controller humidity and power, salt spray controller salt solution addition amount, And the salt spray mixture parameters (such as flow rate, temperature and humidity, salt spray concentration) output by the salt spray mixing box.

Specifically, training the salt spray loss model includes the following sub-steps:

Step S1: Collect historical salt spray test data and construct a salt spray test data feature vector set;

Collect historical salt spray test data and obtain temperature controller parameters, humidity controller parameters, salt spray controller parameters and salt spray mixing parameters from the historical salt spray test data; extract feature vectors from these historical salt spray test data to obtain salt Fog test data feature vector set S={(x ₁ ,y ₁ ,z ₁ ), (x ₂ ,y ₂ ,z ₂ )...(x _V ,y _V ,z _V )}, where x _i = {a ₁ , a ₂ , a ₃ }, a ₁ , a ₂ , a ₃ respectively represent the air temperature, humidity and flow rate entering the salt spray mixing box, _yi = {b ₁ , b ₂ , b ₃ , b ₄ }, b ₁ , b ₂ , b ₃ , b ₄ respectively represent the temperature, humidity, flow rate and concentration of salt spray entering the salt spray mixing box, z _i = {c ₁ , c ₂ , c ₃ , c ₄ }, c ₁ , c ₂ , c ₃ and c ₄ respectively represent the temperature, humidity, flow rate and concentration of the salt spray mixture output by the salt spray mixing box.

Step S2: Input the salt spray test data feature vector set into multiple sub-data models, use each sub-data model to process the salt spray test data feature vector set, and estimate the weight set of each sub-data model through the processing results;

Specifically, the salt spray test data feature vector set is input into the classification model, and the feature vector set is used to train the sub-data model Reuse child data models Predict the feature vector set to obtain the prediction results, and use the formula to pass the prediction results The set of weights {ρ ₁ ,ρ ₂ ,ρ ₃ ...ρ _T } to estimate the sub-classification model, where argmax is The set of ρ with the minimum value, ρ ₁ , ρ ₂ , ρ ₃ ...ρ _T is the weight set of each sub-classification model, is the t-th sub-data model trained using the air parameters passed into the salt spray mixing box, is the t-th sub-data model trained using the salt spray parameters passed into the salt spray mixing box, It is the t-th sub-data model trained using the salt spray mixture parameters output from the salt spray mixing box. The value of t is from 1 to T, and T is the number of sub-data models.

Step S3: Determine the salt spray loss model based on the salt spray test data feature vector set, each sub-data model and the sub-data model weight set;

Specifically, through each sub-classification model and its corresponding right The combination of heavy sets {ρ ₁ , ρ ₂ , ρ ₃ ...ρ _T } determines the salt spray loss model

Step 312: The program controller sets the salt spray mixture parameters that need to be output, determines the latest salt spray loss, inputs the salt spray loss and salt spray mixture parameters into the salt spray loss model, and determines the incoming air parameters and salt spray. parameter;

Among them, the latest salt spray loss this time is the salt spray loss calculated last time by the salt spray loss model. In order to make the calculation accuracy of the salt spray loss model higher, after each test, the salt spray loss model is retrained based on the test data to improve the accuracy of the model.

Step 320: When the system is running, the temperature of the air is adjusted to corresponding parameters through the temperature controller, and the air in the temperature controller is transported to the first duct and the second duct through the first fan and the second fan respectively.

Optionally, in the embodiment of the present application, steps 310 and 320 can be automatically controlled by the program according to the settings before starting the salt spray environment test system, or can be manually set by the experimenter in advance based on the calculation results. In addition, steps Steps 310 and 320 can also be set first after starting the salt spray environment test system, which is not limited here.

Step 330: The air in the first pipe controls the relative humidity of the air through the humidity controller, and then flows into the salt spray mixing box; the air in the second pipe takes away the salt spray atmosphere generated by the salt spray generator and flows into the mixing box. in the box.

Step 340: Set the flow rate of the third fan, pass the salt spray in the salt spray mixing box into the organic glass box, monitor the relative humidity and salt spray concentration in the organic glass box, and adjust the power and humidity controller power according to the monitoring result feedback. The power of the salt spray generator is adjusted until the salt spray concentration and relative humidity in the organic glass box reach the set value.

Test example: The new salt spray environment test system of the present invention is connected to a plexiglass box to control the salt spray concentration and relative humidity in the box. The required parameters in the box are set to 85% relative humidity, 30 mg/m ³ salt spray concentration, and 35°C temperature. Add a salt solution with a mass fraction of 5% into the liquid storage tank of the salt spray generator, change the voltage of the ultrasonic atomization piece, and control the atomization volume of the ultrasonic atomization piece to 100 ml/h. When the system is running, first adjust the air temperature to 35°C through the temperature controller, set the flow rate of the first fan to 200m ³ /h, and the wind speed of the second fan to 80m ³ /h. The temperature is adjusted through the first fan and the second fan. The air in the controller is transported separately to the first and second pipes. The air in the first pipe passes through the humidity controller to increase the relative humidity of the air, and then flows into the salt spray mixing box; the air in the second pipe takes away the salt spray atmosphere generated by the salt spray generator and flows into the mixing box. Set the flow rate of the third fan to 280m ³ /h, and pass the salt spray in the salt spray mixing box into the organic glass box. Monitor the relative humidity and salt spray concentration in the organic glass box, and adjust the power of the humidity controller and salt spray generator based on the monitoring results feedback until the salt spray concentration and relative humidity in the organic glass box reach the set values.

Embodiment 3

The third embodiment provides a simple environmental parameter control method for the salt spray environment test system in the first embodiment. Simply put, after determining the initial values of the temperature control 1, humidity controller 2, and salt spray controller 3 based on environmental requirements and experience or preliminary calculations, the first fan 7 and/or the second fan 8 adjust the The salt spray concentration and relative humidity output by the salt spray environment test system are simultaneously adjusted to simultaneously adjust the third fan 10 to balance the air pressure.

The above-described specific embodiments further describe the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above-mentioned are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope: Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solution of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A new type of salt spray environment test system, characterized by including: a temperature controller (1), a humidity controller (2), a salt spray controller (3) and a salt spray mixing box (4); the temperature controller (1) ) is connected to the salt spray mixing box (4) through two pipes, one is called the first pipe (5), on which the first fan (7) and the humidity controller (2) are installed, and the other is called the second pipe (6) ), on which a second fan (8) is installed and connected to the salt spray controller (3); the system passes the temperature controller (1), the first fan (7) and the humidity controller (2) to the The salt spray mixing box (4) inputs air with adjusted temperature and humidity, and the temperature controller (1), the second extension (8), and the salt spray controller (3) supply air to the salt spray mixing box (4) through the second pipe (6). The salt spray mixing box (4) inputs salt spray, and the air and salt spray are mixed in the salt spray mixing box (4) and then output to the outside of the system through an external fan.
2. A new type of salt spray environment test system as claimed in claim 1, characterized in that an evaporator (11) and a heater (12) are provided in the temperature controller (1). By adjusting the evaporator (11) and the heater (12), The heater (12) regulates the air temperature; the temperature controller (1) outputs the conditioned air to the outside through the first pipe (5) and the second pipe (6).
3. A new salt spray environment test system as claimed in claim 2, characterized in that the humidity controller (2) is mainly composed of a humidification system, and the humidification amount is adjusted by the power of the humidification system in the humidity controller (2). Then, the relative humidity of the air in the first pipe (5) is adjusted, and the air with adjusted humidity is input into the salt spray mixing box (4) through the first pipe (5).
4. A new type of salt spray environment test system according to claim 3, characterized in that the salt spray controller (3) includes a salt spray generator (31) and a salt spray output pipe (32), and the salt spray output pipe (32) is connected to the second pipe (6), and the salt spray generated by the salt spray generator (31) is transported to the second pipe (6) through the salt spray output pipe (32), and enters the salt spray through the second pipe (6). Mixing box (4); the pipe outlet of the first pipe (5) leading into the salt spray mixing box (4) is close to the second pipe (6) and is arranged at the bottom of the salt spray mixing box (4), so that the first pipe ( The air from 5) and the salt spray from the second pipe (6) can quickly merge.
5. A new salt spray environment test system as claimed in claim 4, characterized in that the salt spray generator (31) includes an ultrasonic atomization sheet (311), a liquid storage tank (312) and an atomization chamber (313). A water level sensor (314) is provided in the atomization chamber (313) to control the amount of solution in the liquid storage tank (312) entering the atomization chamber (313) to ensure that the water level in the atomization chamber (313) is within an appropriate range. , to ensure the normal operation of the atomizer film.
6. A new type of salt spray environment test system according to claim 4, characterized in that the salt spray output pipe (32) is a vertical pipe (321), a curved pipe (322) and a horizontal pipe (323) formed in one piece. channel structure; the vertical tube (321) is connected to the atomization chamber (313) of the salt spray generator (31); the curved tube (322) can make the larger droplets generated by the salt spray generator (31) flow back to the atomizer The cavity (313) ensures that the salt spray atmosphere with a particle size of microns and uniformity is passed into the second pipe (6); the direction of the pipe outlet of the transverse pipe (323) is toward the salt spray mixing box (4), so that the generated salt The mist can directly flow into the salt mist mixing box (4) with little resistance.
7. A new type of salt spray environment test system according to claim 4, characterized in that in the salt spray mixing box (4), the air introduced through the first pipe (5) and the air passed through the second pipe (6) The incoming salt spray is mixed, and the mixed gas is output to the outside of the system through the third pipe (9) and the third fan (10) connected to the outer top of the salt spray mixing box (4).
8. A new salt spray environment test system as claimed in claim 7, characterized in that the first fan (7), the second fan (8) and the third fan (10) are air supply devices of the same structure type, Automatic switches and flow adjustment components can be set to realize automatic control of switches and flow. The wind speed of the fan can be adjusted to meet different flow requirements, and the flow rate of the third fan (10) needs to be set equal to the first fan (7) and the flow rate of the second fan (8) to avoid changes in the internal pressure of the system.
9. A new type of salt spray environment test system according to any one of claims 1 to 8, characterized in that the salt spray environment test system determines the temperature control (1), After setting the initial values of the humidity controller (2) and the salt spray controller (3), the output salt spray concentration and relative humidity are adjusted by controlling the first fan (7) and/or the second fan (8), and at the same time The external fans are controlled synchronously to balance the air pressure.
10. A new type of salt spray environment test system according to any one of claims 1 to 8, characterized in that the salt spray environment test system controls the environmental parameters of the salt spray environment test through a program controller, and the program control The device determines the parameters of the temperature controller and humidity controller based on the set parameters of the salt spray mixing box, including the following steps:

    Step S1: Pre-train the salt spray loss model in the program controller. Training the salt spray loss model specifically includes the following sub-steps:

    Step S11: Collect historical salt spray test data and construct a salt spray test data feature vector set;

    Collect historical salt spray test data and obtain temperature controller parameters, humidity controller parameters, salt spray controller parameters and salt spray mixing parameters from the historical salt spray test data; extract feature vectors from these historical salt spray test data to obtain salt Fog test data feature vector set S={(x ₁ ,y ₁ ,z ₁ ), (x ₂ ,y ₂ ,z ₂ )...(x _V ,y _V ,z _V )}, where x _i = {a ₁ , a ₂ , a ₃ }, a ₁ , a ₂ , a ₃ respectively represent the air temperature, humidity and flow entering the salt spray mixing box. Quantity, y _i = {b ₁ , b ₂ , b ₃ , b ₄ }, b ₁ , b ₂ , b ₃ , b ₄ respectively represent the temperature, humidity, flow rate and concentration of salt spray entering the salt spray mixing box, z _i = {c ₁ , c ₂ , c ₃ , c ₄ }, c ₁ , c ₂ , c ₃ , c ₄ respectively represent the temperature, humidity, flow rate and concentration of the salt spray mixture output by the salt spray mixing box;

    Step S12: Input the salt spray test data feature vector set into multiple sub-data models, use each sub-data model to process the salt spray test data feature vector set, and estimate the weight set of each sub-data model through the processing results; specifically:

    Input the salt spray test data feature vector set into the classification model, and use the feature vector set to train the sub-data model Reuse child data models Predict the feature vector set to obtain the prediction results, and use the formula to pass the prediction results The set of weights {ρ ₁ ,ρ ₂ ,ρ ₃ ...ρ _T } to estimate the sub-classification model, where argmax is The set of ρ with the minimum value, ρ ₁ , ρ ₂ , ρ ₃ ...ρ _T is the weight set of each sub-classification model, is the t-th sub-data model trained using the air parameters passed into the salt spray mixing box, is the t-th sub-data model trained using the salt spray parameters passed into the salt spray mixing box, It is the t-th sub-data model trained using the salt spray mixture parameters output from the salt spray mixing box. The value of t is from 1 to T, and T is the number of sub-data models;

    Step S13: Determine the salt spray loss model based on the salt spray test data feature vector set, each sub-data model and the sub-data model weight set; specifically:

    Through each sub-classification model Combine with its corresponding weight set {ρ ₁ , ρ ₂ , ρ ₃ ...ρ _T } to determine the salt spray loss model

    Step S2: Input the set parameters of the salt spray mixing box and the latest recorded salt spray loss into the salt spray loss model, and determine the incoming air parameters and salt spray parameters.